Hammer-press.



E. H. WRAY & L. M. PYLE. HAMMER PRESS,

APPLICATION FILED JULY 18,1912.

L461Y Patented Nov. 19,1912.

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EDWARD H. WRAY, or PHILADELPHIA, AND LOUIS M. PYLE, F BRYN MAWR, PENN- SYLVANIA, nssrenons TO NILES-BEMENT-POND COMPANY, or JERSEY CITY, NEW JERSEY, A CORPORATION on NEW JERSEY.

HAMMER-PRESS.

Specification of Letters Patent.

Patented Nov. 1'99, 191% I pressure. A given piece of work being done in a hammer press may, in some cases, be

- done by the hammer action alone, while in other cases it may be done by the press action alone, while in still other cases it may be done by the press-action following the hammer action or vice-versa.

()ur invention will be readily understood from the following description taken in con nection with the accompanying drawing in which Figure 1 is a vertical diametrical section of the hammer and press cylinders: Fig. 2 a horizontal section of the same in the plane of line a of Fig. 1: and Fig. 3 an enlarged reproduction of the lower lefthand portion of the cylinder-work seen in Fig. 1.

In the drawing :-1, indicates a portion of the frame, such as is employed in an ordinary steam hammer: 2, a hydraulic cylinder supported by the frame with its axis-vertical, this cylinder being closed at its'top and open at its base: 3, a steam cylinder disposed concentrically within the hydraulic cylinder: 4:, a head secured above the hydraulic cylinder: 5, a hollow cylindrical boss whose interior forms the steam cylinder 3: 6, a steam passage leading to the upper end of steam cylinder 3: 7 a steam passage leading to the lower end of steam cylinder 3: 8, a steamchest, of not unusual construction, having a steam inlet and an exhaust outlet and having ports communicating with the steam passages 6 and 7 and containing an ordinary valve for controlling the flow of steam to land from the upper and lower ends of steam cylinder 3: 9, the steam piston, disposed within the steam cylinder 3: 10, the pistonrod: 11, the ram, connected with the steam piston rod as usual in steam hammers: 12, an annular hydraulic-plunger disposed within hydraulic cylinder2 around steam cylinder 3, this plunger projecting downwardly from the hydraulic cylinder: 13, a foot-piece secured to the base of the hydraulic plunger and adapted to rest upon ram 11: 14;, cup-leather packing rings disposed in the hydraulic cylinder around the lower portion of hydraulic plunger 12: 15, rings secured to the base of the cylinder structure, one within and the otherexterior to the hydraulic plunger, these rings having l ps projecting inwardly under the packing rings: 16, the hammer-die secured to the ram 11 in the manner usual in steam hammers: 17, a movable support adapted to be moved to position under foot-piece 13 when the latter is in upper position: 18, a passage leading to the upper end of the hydraulic cylinder and adapted for communication with a source of supply of water under pressure and under valved control, as is usual in hydraulic presses: and 19, rings disposed over the lips of rings 15 and under the cupleather packing-rings.

Assuming the parts to be in the position indicated in Fig. 1, but further assuming that support 17 is swung under foot-piece 13 and that waterpassage 18 is open to exhaust, the hydraulic plunger is supported in its upper position and the steam hammer parts represented by the ram and hammerdie and piston and valve may be used in the ordinary manner of steam hammers precisely as though the hydraulic plunger were absent. If, now, support 17 be displaced from under the hydraulic piston water under pressure be admitted through passage 18 the hydraulic plunger 12 will be forced down, forcing the ram and hammer-die down and causing the hammer-die to exercise its pressing action upon the work. If, when the hydraulic plunger moves downward, there be steam under the steam piston then. that steam will simply be forced back to the source of steam supply. When the parts are in lower position and passage 18 is open to exhaust, if steam be admitted below the steam piston it will elevate the parts and the hydraulic plunger may, if desired, be again locked in upper position by the hydraulic press of a hammer press it is customary to produce the stroke of the hydraulic plunger, or to fill the hydraulic cylinder as the plunger. descends, with water at low pressure, and to produce the final squeezing action by admitting water at high pressure, as from an accumulator or intenslfier over the hydraulic plunger. And in the present invention this can be accomplished by means of the usual hydraulic press connections communicating with passage 18. Again, steam hammers are in some cases operated by, means of steam employed alternately below and above the steam piston, and, in other cases, by means of steam acting only below the steam piston and serving to lift the hammer which descends by gravity when the steam below the piston is released.

Our present invention manifestly lends itself to either system of steam hammer op eration, though we have seen fit "to illustrate the apparatus as arranged for the use of: steam above as well as below the piston.

Most any of the valve arrangements and valve gears usually employed in connection with steam hammers and hydraulic presses and hammer presses'can be availed of in connection with our present invention. It is also to be understood that steam hammers, so called, are sometimes operated by compressed air. The steam hammer portion of our present invention manifestly lends itself to operation by air, and it is to be'understood that the term steam, as employed in this specification, comprehends any other suitable elastic fluid as its equivalent.

We claim 1. A hammer-press comprising, a steam cylinder, a piston therein, a piston-rod connected with the piston, a ram and hammerdie connected with the piston-rod, an annular hydraulic cylinder concentrically surrounding the steam cylinder, an amiular hydraulic plunger disposed within the hydraulic cylinder and projecting therefrom toward the ram, and a connection between the hydraulic plunger and the ram, combined. substantially as set forth.

2. A hammer-press comprising, a steam cylinder,'a piston therein, a piston-rod connected with the piston, a ram and hammerdie connected with the piston rod, an annular hydraulic cylinder concentrically surroundin the steam cylinder, an annular hydrauhc plunger disposed within the. hydraulic'cylinder and, projecting therefrom the hydraulic plunger and adapted for downward contact with but unattached to the ram, combined substantially as set forth. .3. A hammer-press comprising, a steam cylinderfa piston therein, a piston-rod connected with the piston, a ram and hammerdie connected with the piston-rod, an annular hydraulic cylinder concentrically surrounding the steam cylinder, an annular hydraulic plunger disposed within the hydraulic cylinder and projecting therefrom toward the ram, a connection between the hydraulic plunger and the ram, and a movable support to maintain the hydraulic plunger in upward position independent of the ram, combined substantially as set forth.

4. A hammer-press comprising, a steam cylinder, a piston therein, a piston-rod connected with the piston, a ram and hammerdie connected with the piston-rod, an annular hydraulic cylinder concentrically surrounding the steam cylinder, an annular hydraulic plunger disposed within the hydraulic cylinder and projecting therefrom toward the ram, and a foot-piece secured to the hydraulic plunger and surrounding the piston-rod and adapted to engage over the ram, combined substantially as set forth.

5. A hammer-press comprising, a hydrau. lic cylinder, a boss containing a steam-cylinder and disposed concentrically within the hydraulic, cylinder, a piston in the steam cylinder, a piston-rod'and ram and hammerdie connected with the piston, an annular hydraulic plunger disposed within the hydraulic cyllnder and around the steam cylinder, a connection between the hydraulic plunger and the rain, cup-leather rings inside and outside the annular hydraulic plunger, and separable supports disposed below said cup-leather rings, combined substantially as set forth.

6. A hammer-press comprising, a hydraulic cylinder, a boss containing a steam-cylinder and disposed concentrically within the hydraulic cylinder, a piston in the steam cylinder, a piston-rod and ram and hammerdie connected with the piston, an annular hydraulic plunger disposed within the hydraulic cylinder and around the steam cylinder, a connection between the hydraulic plunger and the ram, cup-leather rings disposed in annular recesses in the bases of the hydraulic cylinder and boss and inside and outside the hydraulic plunger, rings disposed within said recesses and forming abutments for the cup-leather rings, and

I toward the ram, and a connection rigid with rings separably secured to the bases of the hydraulic cylinder and boss and forming abutting supports for the first mentioned rings, combined substantially as set forth.

7. A hammer-press comprising, a hydraulic cylinder open at its lower end, an annular hydraulic plunger disposed within said hydraulic cylinder and projecting downwardly therefrom, a head secured to the upper end of the hydraulic cylinder, a boss. projecting downwardly from said head within said annular hydraulic plunger, and containing a steam cylinder concentric with the hydraulic cylinder, a steam chest carried by said head, a piston in the steam cylinder,

a piston-rod projecting downwardly from the piston, a ram and hammer-die connected with the piston-rod, and a connection between the bases of the hydraulic plunger and the ram, combined substantially as set forth.

EDWARD H. WRAY. LOUIS M. PYLE. Witnesses:

W. G. PARSONS, R. RAYMOND PORTER. 

